4936 Notices of New Books. 



' On the Advantage to Botany of Local Lists, and Notes with 

 reference to the Algae of the East Coast of Ireland.' By Gilbert 

 Saunders. 



' List of Marine Algae collected at Skerries, near the Northern Limit 

 of the proposed Dublin District, in the Summer of 1854.' By Gilbert 

 Saunders. 



' On the Effects of the Severe Frost on Plants in the Neighbourhood 

 of Sligo.' By the Right Hon. John Wynne. 



{ Quarterly Journal of Microscopical Science, including the Trans- 

 actions of the Microscopical Society of London? Edited by 

 Edwin Lankester, M.D., F.R.S., F.L.S., and George Busk, 

 F.R.C.S.E., F.R.S., F.L.S. London : Highley. No. XIII., 

 dated October, 1855; price As. 



The contents of the October number are as follows : — 



' Notice of some New Species of British Freshwater Diatomaceae.' 

 By William Carpenter, M.D., F.R.S.E. 



* An Account of the Structure and Relations of Sagitta bipunctata.' 

 By G. Busk, F.R.S. 



' On the Magnifying Power of Short Spaces, illustrated by the 

 Transmission of Light through Minute Apertures.' By John Gorham, 

 M.R.C.S.E., &c. 



' Notes and Observations on the Sap-circulation of Plants.' By 

 F. H. Wenham. 



' Hartig on the Phytozoa of Antheridia.' By F. Currey, Esq., M.A. 



' On a Universal Indicator for Microscopes.' By J. W. Bailey. 



4 On the Impregnation and Germination of Algae.' By M. Pring- 

 sheim. [Abridged from the Reports of the Berlin Academy.] 



4 On Sphaerozoum, Meyer (Thalassicolla, Huxley), Noctiluca and the 

 Polycystinae.' By Professor Miiller. [Translated from the Report of 

 the Berlin Academy, April 19, 1855.] 



6 On the Development of the Spermatozoids in Torrea vitrea.' By 

 M. A. de Quatrefages. [Translated from the Annales des Sciences 

 Naturelles,' 4th Series, vol. ii. p. 152.] 



' On the Influence of Dilute-Sulphuric Acid on the Deposit Layers 

 of the Cell-Wall in its Earliest Condition.' By Dr. T. Hartig. 

 [Translated from the Botanical Zeitung, March 30, 1855, p. 222]. 



1 On the Cystolites or Calcareous Concretions in the Urticaceae and 

 other Plants.' By H. A. Weddell, Aide-Naturaliste in the Jardin des 



